Duplication

You choose an object worth 10,000 go or less and a complete reflection of it appears this reflection functions exactly as the original one did, this spell can be dispelled by the wish spell.

At Higher 

1 level above 17th: the object if it is nonmagical you can make it magical eg. you have a sword that is nonmagical and you use this spell to duplicate the sword and make it magical in the process.

2 levels above 17th:  you can make two copies instead of one and if the object you choose is already magical eg. a longbow that does 1d12 piercing damage + 1d6 fire damage you can double the dice so it would be 1d12 + 2d6 fire damage.

3 levels above 17th: the maximum worth of the object becomes 20,000 gp